CVE-2026-108380dataclasses-avroschema field documentation allows code injection in generated Pydantic descriptions
Updated under an hour ago ()
Does this affect you?
It affects marcosschroh dataclasses-avroschema. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.45%, higher than 38% of scored CVEs.
Do this next
Free account, 1 product
dataclasses-avroschema generates Avro schemas from Python dataclasses, Pydantic models, and Faust Records and generates Python code from Avro schemas. From version 0.65.9 through 0.70.5, PydanticFieldRepresentation.add_field_properties inserts a schema field's doc value between the quotes of a generated pydantic.Field description argument without escaping it. A crafted quote can terminate the string and inject an expression evaluated during generated class definition, allowing arbitrary Python code execution for Pydantic and AvroDantic model generation. Version 0.70.6 fixes the vulnerability by escaping the documentation value before rendering it.
- CVSS
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-94
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.45% (percentile 38)
- Assigned by
- GitHub_M
- NVD analysis
- Deferred
- Record last updated
- Oct 13, 2026
- First seen by InfoSec Signals
- Oct 13, 2026
Affected products
marcosschroh dataclasses-avroschema marcosschroh:dataclasses_avroschema (from the name) | from 0.65.9, < 0.70.6 | CNA record |
References
- https://github.com/marcosschroh/dataclasses-avroschema/security/advisories/GHSA-g7p7-mgvm-jw7px-refsource-confirm
- https://github.com/marcosschroh/dataclasses-avroschema/pull/843x-refsource-misc
- https://github.com/marcosschroh/dataclasses-avroschema/commit/429f3d705d2d04c0c65e2ef832daed5ff91318fcx-refsource-misc
- https://github.com/marcosschroh/dataclasses-avroschema/releases/tag/0.70.6x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.